diff --git a/mod/filerm.php b/mod/filerm.php
index 335b27b320..d8da0e1255 100644
--- a/mod/filerm.php
+++ b/mod/filerm.php
@@ -14,7 +14,7 @@ function filerm_content(App $a)
 	}
 
 	$term = XML::unescape(trim($_GET['term']));
-	$cat = XML::unescape(trim($_GET['cat']));
+	$cat = XML::unescape(trim(defaults($_GET, 'cat', '')));
 
 	$category = (($cat) ? true : false);
 
@@ -25,12 +25,18 @@ function filerm_content(App $a)
 
 	$item_id = (($a->argc > 1) ? intval($a->argv[1]) : 0);
 
-	Logger::log('filerm: tag ' . $term . ' item ' . $item_id);
+	Logger::log('filerm: tag ' . $term . ' item ' . $item_id  . ' category ' . ($category ? 'true' :  'false'));
 
 	if ($item_id && strlen($term))
 	{
-		FileTag::unsaveFile(local_user(), $item_id, $term, $category);
+		if (FileTag::unsaveFile(local_user(), $item_id, $term, $category)){
+			info('Item removed');
+		}
+	}
+	else {
+		info('Item was not deleted');
 	}
 
+	$a->internalRedirect('/network?f=&file=' . $term);
 	killme();
 }
diff --git a/mod/network.php b/mod/network.php
index 81a2f2b2ba..37c7b45286 100644
--- a/mod/network.php
+++ b/mod/network.php
@@ -346,6 +346,7 @@ function networkConversation(App $a, $items, Pager $pager, $mode, $update, $orde
 	// Set this so that the conversation function can find out contact info for our wall-wall items
 	$a->page_contact = $a->contact;
 
+	$items = (empty($items) ? [] : $items);
 	$o = conversation($a, $items, $pager, $mode, $update, false, $ordering, local_user());
 
 	if (!$update) {
diff --git a/src/Model/FileTag.php b/src/Model/FileTag.php
index d3baffdd4f..b5c4cf2aef 100644
--- a/src/Model/FileTag.php
+++ b/src/Model/FileTag.php
@@ -290,7 +290,7 @@ class FileTag
             return false;
         }
 
-        $fields = ['file' => str_replace($pattern, '', $item['file'])];
+        $fields = ['file' => str_replace($pattern, null, $item['file'])];
         Item::update($fields, ['id' => $item_id]);
 
         $r = q("SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d",
diff --git a/src/Model/Item.php b/src/Model/Item.php
index 4a29e51d31..8e154b0834 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -911,7 +911,7 @@ class Item extends BaseObject
 				}
 			}
 
-			if (!empty($files)) {
+			if (!is_null($files)) {
 				Term::insertFromFileFieldByItemId($item['id'], $files);
 				if (!empty($item['file'])) {
 					DBA::update('item', ['file' => ''], ['id' => $item['id']]);